CN202691997U

CN202691997U - Energy-saving roller-hearth continuous kiln waste heat recovery boiler

Info

Publication number: CN202691997U
Application number: CN2012202168380U
Authority: CN
Inventors: 丁永健; 丁帅
Original assignee: HENGYANG DINGDIANER INDUSTRIAL FURNACE ENERGY-SAVING Co Ltd
Current assignee: HENGYANG DINGDIANER INDUSTRIAL FURNACE ENERGY-SAVING Co Ltd
Priority date: 2012-04-28
Filing date: 2012-05-15
Publication date: 2013-01-23
Anticipated expiration: 2022-05-15

Abstract

The utility model discloses an energy-saving roller-hearth continuous kiln waste heat recovery boiler, which comprises a boiler barrel (1), heat pipes (2), riser pipes (3), down pipes (4) and header pipes (5), wherein the lower parts of the heat pipes (2) are positioned below the boiler barrel (1), and the upper parts of the heat pipes (2) are positioned in the boiler barrel (1); the lower parts of the riser pipes (3) are respectively connected with the left and right header pipes (5), and the upper parts of the riser pipes (3) are connected with the boiler barrel (1); the lower parts of the down pipes (4) are respectively connected with the left and right header pipes (5), and the upper parts of the down pipes (4) are connected with the boiler barrel (1); the bottoms of the left and right header pipes (5) are provided with header discharge pipes (51); the outer side of the boiler barrel (1) and the riser pipes (3) is provided with a thermal insulation layer (6); and the periphery of the down pipes (4) and the header pipes (5) is provided with a thermal insulation layer (6). By the energy-saving roller-hearth continuous kiln waste heat recovery boiler, high-temperature flue gas heat energy and radiating heat energy of steel pipes can be simultaneously exchanged to generate steam which serves as steam for steel pipe production and domestic steam; and moreover, the tapping temperature of the steel pipes is reduced, the secondary oxidation burning loss is reduced, and the outer surface quality of a product is improved.

Description

Continous way using residual heat from kiln furnace recovery boiler at the bottom of the energy-conservation forming roll

Technical field

The utility model relates to a kind of heat-treatment furnace, particularly continous way using residual heat from kiln furnace recovery boiler at the bottom of a kind of energy-conservation forming roll.

Background technology

The products such as existing steel pipe, steel plate and band steel, the positive annealing furnace of continous way comprises heating clamber, moist closet and furnace roller at the bottom of the roller that uses in process of production, heating clamber links to each other with moist closet, furnace roller is installed in heating clamber and the moist closet by the outer bearing block of furnace wall, it is furnace roof above the furnace wall, the below is furnace bottom, at the tail end of moist closet flue is arranged.The products such as steel pipe, steel plate and band steel after heating clamber fast heating at high temperature and moist closet insulation, are directly come out of the stove and are cooled off in air in roller-hearth continuous annealing furnace, and the high-temperature flue gas in heating clamber and the moist closet is directly discharged through flue.Its weak point is: steel pipe, steel plate and the temperature when directly coming out of the stove after annealing or normalizing with products such as steel up to 800 ℃ about, cause a large amount of high temperature heat to be released in the atmosphere, cause the worker laboring environment that just anneals poor; Simultaneously, the products such as steel pipe, steel plate and band steel are just being annealed when coming out of the stove air cooling about 800 ℃, iron in its superficial layer will carry out chemical reaction and produce secondary oxidation with airborne oxidizing gas (for example oxygen, steam), behind the product secondary oxidations such as steel pipe, steel plate and band steel, the secondary oxidation iron sheet that its Surface Creation one deck is thicker, steel pipe, steel plate have been affected and with the pickling speed of the products such as steel, the consumption of sulfuric acid when having increased pickling; If the secondary oxidation iron sheet is thicker during the product annealing such as fished pipe, steel plate and band steel, just not only can causes the loss of steel, but also can reduce steel pipe, steel plate and with the outer surface quality of the products such as steel.

Summary of the invention

The purpose of this utility model is the above-mentioned deficiency that overcomes prior art, and provide continous way using residual heat from kiln furnace recovery boiler at the bottom of a kind of energy-conservation forming roll, in order to be produced as steam with steel pipe, steel plate and with high temperature heat and high-temperature flue gas energy recovery after the annealing of the products such as steel, replace Endogenous producing steam boiler, thereby be national energy savings, environmental contamination reduction improves workman's working condition, reduce the production cost of enterprise, improve the economic benefit of enterprise.

The technical solution of the utility model is: continous way using residual heat from kiln furnace recovery boiler at the bottom of a kind of energy-conservation forming roll, comprise drum, heat pipe, tedge, down-comer and collecting box pipe, and water inlet pipe, water-level gauge pipe and inspection manhole are arranged on the drum, blow-off pipe is arranged at the bottom; The heat pipe bottom is positioned under the drum, and top is positioned at drum; The tedge bottom is connected with left and right sides collecting box pipe respectively, and top all is connected with drum; The bottom of down-comer is connected with left and right sides collecting box pipe respectively, and top all is connected with drum; The header blow-off pipe is arranged at collecting box pipe bottom, the left and right sides, and there is heat-insulation layer in the outside of drum and tedge, and the periphery of down-comer and collecting box pipe has heat-insulation layer.

Heat pipe is divided into some rows from front to back.

Tedge is divided into some rows from front to back, two tedges about every row has.

Two rows totally four before and after down-comer divided, two down-comers about front-seat and rear row respectively has.

Heat pipe is shaped as L shaped, in order to absorb waste heat near thermal source as much as possible.

The utility model heat recovery boiler can exchange simultaneously with high-temperature flue gas heat energy and steel pipe, steel plate and with two kinds of heat energy of radiant heat energy of the products such as steel and be produced as steam, make steel pipe, steel plate and can be controlled at about 250 ℃ with the tapping temperature of the products such as steel, high-temperature flue gas heat energy is most of to be recycled, make most of recovery of energy consumption heat energy of positive annealing furnace be produced as steam, for steel pipe, steel plate and with process steam and the life steam of the products such as steel, improved the heat recovery rate of stove; Simultaneously, steel pipe, steel plate and with the reduction of the product tapping temperatures such as steel have also reduced the secondary oxidation scaling loss, have improved the outer surface quality of product.

The utility model be not only applicable to produce steel pipe, steel plate and with the products such as steel positive annealing furnace, also be applicable to fire the kiln of various ceramic products.

The below is further described detailed content of the present utility model in conjunction with figure and the specific embodiment to produce steel pipe as example.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment one;

Fig. 2 is the right view of Fig. 1;

Fig. 3 is the structural representation of the utility model embodiment two.

The specific embodiment

Embodiment one:

Shown in Fig. 1,3: continous way using residual heat from kiln furnace recovery boiler at the bottom of a kind of energy-conservation forming roll, comprise drum 1, heat pipe 2, tedge 3, down-comer 4 and collecting box pipe 5, water inlet pipe 11, water-level gauge pipe 12 and inspection manhole 13 are arranged on the drum 1, blow-off pipe 14 is arranged at the bottom; Heat pipe 3 is divided into some rows from front to back, and the bottom is positioned at drum 1 time, and top is positioned at drum 1; Tedge 3 is divided into some rows from front to back, and about every row has two, the bottom is connected with left and right sides collecting box pipe 5 respectively, and top all is connected with drum 1; 4 minutes front and back two of down-comer are arranged totally four, two down-comers 4 about front-seat and rear row respectively has, and the bottom of left and right sides down-comer 4 is connected with left and right sides collecting box pipe 5 respectively, and top all is connected with drum 1; Header blow-off pipe 51 is arranged at left and right sides collecting box pipe 5 bottoms, and there is heat-insulation layer 6 in the outside of drum 1 and tedge 3, and the periphery of down-comer 4 and collecting box pipe 5 has heat-insulation layer 6.

From moist closet steel pipe out through on the waste heat recovery section time, after being absorbed by heat recovery boiler, the heat of the steel pipe of temperature about up to 800 ℃ comes out of the stove (tapping temperature can be controlled at about 250 ℃), the bottom of heat pipe 2 absorbs the heat of steel pipe below drum 1 after, the top by heat pipe 2 is delivered in the drum 1; Meanwhile, water in the drum 1 flows into collecting box pipe 5 through down-comer 4, water in the collecting box pipe 5 is after tedge 3 interior heat absorptions heat up, flow back into again in the drum 1, so loop heat exchange, constantly produce steam, in the cold-drawn steel pipe's production process pickling process heating, need not to produce steam by coal-fired (gas) boiler, save a large amount of energy.

Embodiment two:

Shown in Fig. 2,3: continous way using residual heat from kiln furnace recovery boiler at the bottom of a kind of energy-conservation forming roll, comprise drum 1, heat pipe 2, tedge 3, down-comer 4 and collecting box pipe 5, being shaped as of heat pipe 2 is L shaped, so that as much as possible near steel pipe.All the other structures are identical with embodiment one with the course of work.

Claims

1. continous way using residual heat from kiln furnace recovery boiler at the bottom of the energy-conservation forming roll is characterized in that comprising drum, heat pipe, tedge, down-comer and collecting box pipe, and water inlet pipe, water-level gauge pipe and inspection manhole are arranged on the drum, and blow-off pipe is arranged at the bottom; The heat pipe bottom is positioned under the drum, and top is positioned at drum; The tedge bottom is connected with left and right sides collecting box pipe respectively, and top all is connected with drum; The bottom of down-comer is connected with left and right sides collecting box pipe respectively, and top all is connected with drum; The header blow-off pipe is arranged at collecting box pipe bottom, the left and right sides, and there is heat-insulation layer in the outside of drum and tedge, and the periphery of down-comer and collecting box pipe has heat-insulation layer.

2. continous way using residual heat from kiln furnace recovery boiler at the bottom of the energy-conservation forming roll according to claim 1 is characterized in that heat pipe is divided into some rows from front to back.

3. continous way using residual heat from kiln furnace recovery boiler at the bottom of the energy-conservation forming roll according to claim 1 and 2 is characterized in that tedge is divided into some rows from front to back, two tedges about every row has.

4. continous way using residual heat from kiln furnace recovery boiler at the bottom of the energy-conservation forming roll according to claim 1 and 2 is characterized in that down-comer divides totally four of front and back two rows, two down-comers about front-seat and rear row respectively has.

5. continous way using residual heat from kiln furnace recovery boiler at the bottom of the energy-conservation forming roll according to claim 3 is characterized in that down-comer divides totally four of front and back two rows, two down-comers about front-seat and rear row respectively has.

6. continous way using residual heat from kiln furnace recovery boiler at the bottom of the energy-conservation forming roll according to claim 1 and 2, it is L shaped to it is characterized in that heat pipe is shaped as.

7. continous way using residual heat from kiln furnace recovery boiler at the bottom of the energy-conservation forming roll according to claim 3, it is L shaped to it is characterized in that heat pipe is shaped as.

8. continous way using residual heat from kiln furnace recovery boiler at the bottom of the energy-conservation forming roll according to claim 4, it is L shaped to it is characterized in that heat pipe is shaped as.

9. continous way using residual heat from kiln furnace recovery boiler at the bottom of the energy-conservation forming roll according to claim 5, it is L shaped to it is characterized in that heat pipe is shaped as.